Under which conditions does the landing gear warning tone sound?

The landing gear warning tone is designed to alert pilots of critical flight conditions concerning the landing gear configuration. The correct choice indicates that the warning tone will sound if the landing gear is not down and the flaps are set to either 0 or 10 degrees. This situation is significant because it suggests that the aircraft is in a configuration that is not suitable for landing. The purpose of the warning is to prevent unintended landings without the landing gear being deployed, which could lead to a catastrophic accident.

At flap positions of 0 or 10 degrees, the aircraft is typically in a phase of flight where landing preparations should be underway, making it imperative for the gear to be deployed. If the landing gear is retracted during this configuration, the warning tone serves as a critical reminder for the pilot to check the landing gear status and ensure it is safely down before proceeding to land.

Understanding the conditions that trigger this warning tone is essential for maintaining safe flying practices, preventing gear-up landings, and ensuring that the aircraft is appropriately prepared for landing.